Clean drinking water is essential for humans and other creatures. Although water is zero calories or nutrients is any organic compound. Access to clean drinking water has changed over the past century in almost every part of the world. The estimated population of 1 billion people still lack safe drinking water and over 2.5 billion people lack adequate sanitation, clean water, and the correlation of GDP per person, however, noted that some estimates of the Year 2025 more than half the world's population will face water-related risks. A recent report in November 2009 reported that the year 2030 will be in developing countries, demand for water will increase the amount of water are over. 50% water plays an important role in the global economy. Since water is a solvent for various types of chemicals and facilitate the cooling of industrial and transport about 70% of human water use goes to agriculture.
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